- e. oil the volatile oil distilled with steam from the fresh leaf of E. globulus or some other species of E.; contains not less than 70% of eucalyptol; used as an antiseptic and expectorant in cough lozenges and in vaporizer aromatics.
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eu·ca·lyp·tus .yü-kə-'lip-təs n
1) cap a genus of mostly Australian evergreen trees or rarely shrubs of the myrtle family that have rigid entire leaves and umbellate flowers and are widely cultivated for their gums, resins, oils, and useful woods
eucalyptus adj
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Eu·ca·lyp·tus (u″kə-lipґtəs) [eu- + Gr. kalyptos covered] a genus of trees and shrubs of the family Myrtaceae, chiefly native to Australia. E. gloґbulus is the blue gum, source of eucalyptus oil.Medical dictionary. 2011.